A Database of Drosophila Genes & Genomes

FB2013_03, released May 7th, 2013
 

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Citation Moorman, C., Sun, L.V., Wang, J., de Wit, E., Talhout, W., Ward, L.D., Greil, F., Lu, X.J., White, K.P., Bussemaker, H.J., van Steensel, B. (2006). Hotspots of transcription factor colocalization in the genome of Drosophila melanogaster.  Proc. Natl. Acad. Sci. U.S.A. 103(32): 12027--12032. (Export to RIS)
FlyBase ID FBrf0193250
Publication Type Research paper
PubMed ID 16880385
PubMed Abstract Regulation of gene expression is a highly complex process that requires the concerted action of many proteins, including sequence-specific transcription factors, cofactors, and chromatin proteins. In higher eukaryotes, the interplay between these proteins and their interactions with the genome still is poorly understood. We systematically mapped the in vivo binding sites of seven transcription factors with diverse physiological functions, five cofactors, and two heterochromatin proteins at approximately 1-kb resolution in a 2.9 Mb region of the Drosophila melanogaster genome. Surprisingly, all tested transcription factors and cofactors show strongly overlapping localization patterns, and the genome contains many "hotspots" that are targeted by all of these proteins. Several control experiments show that the strong overlap is not an artifact of the techniques used. Colocalization hotspots are 1-5 kb in size, spaced on average by approximately 50 kb, and preferentially located in regions of active transcription. We provide evidence that protein-protein interactions play a role in the hotspot association of some transcription factors. Colocalization hotspots constitute a previously uncharacterized type of feature in the genome of Drosophila, and our results provide insights into the general targeting mechanisms of transcription regulators in a higher eukaryote.
DOI 10.1073/pnas.0605003103
Related Publication(s)
Supplementary material Supporting Materials and Methods. [FBrf0198729]

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Language of Publication English
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Publication Type Journal
Abbreviation Proc. Natl. Acad. Sci. U.S.A.
Title Proceedings of the National Academy of Sciences of the United States of America
Publication Year 1915-
ISBN/ISSN 0027-8424
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